TIAN Xiao,ZHOU Yun-chao,LIU Xiao-yun,et al.Effects of Hedgerow of Species Configuration on the Interception of Nutrition Elements in the Sloping Cultivated Lands[J].Research of Soil and Water Conservation,2011,18(06):89-93.
物种配置植物篱对坡耕地营养元素拦截效应
- Title:
- Effects of Hedgerow of Species Configuration on the Interception of Nutrition Elements in the Sloping Cultivated Lands
- 分类号:
- S157.4+33
- 摘要:
- 通过坡耕地21个径流小区、1个空白对照、6个不同处理方式植物篱(Hedgerow)组合模式，探讨了不同物种配置植物篱对耕地营养元素的拦截效应。结果表明：灰毛豆×紫花苜蓿植物篱对坡耕地营养元素的拦截效果最明显，其中，氮相对拦截总量为181.82 g/hm2，相对拦截率为79.08%；磷相对拦截总量为84.81 g/hm2，相对拦截率90.31%；钾相对拦截总量11.37 g/hm2，相对拦截率83.84%。灰毛豆×黄花菜对氮的拦截效应最小，氮相对拦截总量为117.30 g/hm2，相对拦截率为51.02%；灰毛豆×香根草对磷、钾的拦截效应最小，磷相对拦截总量为55.43 g/hm2，相对拦截率59.02%；钾相对拦截总量6.62 g/hm2，相对拦截率48.86%。不同物种配置植物篱对坡耕地营养元素均具有明显的拦截作用，灰毛豆×紫花苜蓿组合模式的拦截作用最为显著。
- Abstract:
- Through 21 runoff plots in the sloping cultivated lands including a control treatment, six combination patterns of hedgerows of different treatments, the effects of hedgerows of species configuration on the interception of nutrition elements in the sloping cultivated lands were discussed. The results showed that the hedgerows of Tephrosia purpurea L. Pers. and Medicago sativa L., have the significant effects on interception of nutrition elements, of which relative interception of total nitrogen, phosphorus, potassium are 181.82 g/hm2, 84.81 g/hm2 and 11.37 g/hm2 and relative interception rates are 79.08%, 90.31% and 83.84%, respectively, which is the best combination pattern than others in terms of effects of interception of nutrition elements in the sloping cultivated lands. However, the hedgerow of Tephrosia purpurea L. Pers. and Hemerocallis citrina Baroni, total relative interception of nitrogen is 117.30 g/hm2 and relative interception rate is 51.02%, which is worse than others with regard to effect of interception of nitrogen element, and the hedgerow of Tephrosia purpurea L. Pers. and Vetiveria zizanioides L., relative interception of total phosphorus, potassium of is 55.43 g/hm2 and 6.62 g/hm2, and relative interception rates are 59.02% and 48.86%, which is worse than others in terms of effects of interception of phosphorus, potassium elements. The results also show that all hedgerows of species configuration are obvious on the interception of nutrition elements in the sloping cultivated lands, but the combination of Tephrosia purpurea L. Pers. and Medicago sativa L. is the best combination pattern.
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备注/Memo
收稿日期:2011-5-25;改回日期:2011-6-19。
基金项目:贵阳“两湖一库专项”项目([2009]筑科农合同字第3-042号)
作者简介:田潇(1987- )，男，贵州沿河人，学士，从事水土保持与荒漠化防治研究。E-mail：xtian2008@163.com
通讯作者:周运超(1964- )，贵州兴仁人，教授，博导，从事水土保持与荒漠化防治研究。E-mail：fc.yczhou@gzu.edu.cn